Envelop-holding attachment for printing-press platens



C. H.. MARTIN.

ENVELOP HOLDING ATTACHMENT FOR PRINTING PRESS PLATENS. APPLICATION FILED "1AM. I0. 1921.

Patented Deb. 27, 1921.

W W/fficsS WK]? 5 ATTORNEY,

UNKTED STATES PATENT OFFICE;

CHARLES H. MARTIN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR O33 ONE-HALF TO A. K. DELLAROVJE AND ONE-HALF TO' EMMA HULL, BOTH OF LOS ANGELES,

CALIFORNIA.

ENVELOP-HOLDING ATTACHMENT FOR PRINTINGPRESS PLATENS.

LstOLlYeL Application filed. January 10, 1921.

To (1U 20 item it may concern:

Be it known that 1, CHARLES HUGH MAR- rm, a citizen of the United States, residing at L05 Angeles, in the county of Los Angeles and State of California, have invented a new and useful Envelop-Holding Attachment for Printing-Press Platens, of which the following is a specification.

This invention is more particularly adapted for use on platen presses in connection with the Miller pneumatic feeder when used in connection with the envelop separator for printing presses. described in my application, Serial No. 406,812, filed August 30, 1920, and in which a tappet in the form of a slight protuberance is arranged to project over one edge of a stack of envelops and is adapted to intercept such of the envelops as are not in direct touch with the pneumatic lifting means.

In presses provided with the devices above referred to, envelops are fed one by one upon the platen of the press by means of a rack, and are shifted endwise laterally upon the platen to a gage bar and there held until printed; but after the envelop has been placed upon the platen the rack raises slightly and passes up over the envelop; after which the printing is done and the envelop is removed from the platen. It isa common occurrence for a window envelop or an envelop delivered to the platen ina crumpled or bent form, to be dragged by the rack as it returns over the envelop, and consequently the envelop is displaced from the position in which it should be when printed, so that the impression is out of place; or, more likely the rack on return,

will drag the envelop back, and so crumple and displace it as to clog the press and necessitate stopping the same, to unclog it thus causing great waste of time as well as loss by destruction of envelops.

An object of this invention is to provide means which may be easily attached to the platen pad of the press in proper position and when so attached will receive the en velop as it is placed on the platen and will. hold the same against displacement by said rack and yet allow the envelop to be shifted by the mechanism rovided therefor in devices such as the hTiller pneumatic envelop feeder.

Simplicity, cheapness and ease of apply- Specification of Letters Patent.

Patented Dec. 27, 1921.

Serial No. 436,095.

ing and removing are other objects of the invention.

Further objects, advantages and features of invention may appear from the accompanying drawing, the subjoined detail description and the appended claims.

The invention may be applied in various forms.

The accompanying drawing illustrates the invention in the forms at present deemed most desirable.

Figure 1 is a perspective view of a preferred form of the invention applied to the platen of a printin press; an envelop is shown clamped in position thereby and grasped by a bird for removal.

Fig. 2 is a perspective view of one of the clips detached.

Fig. 3 is an enlarged plan view of one of the clips.

Fig. t is an elevation of one of the clips in section on line 11 Fig. 3.

Fig. 5 is an edge elevation of a clip of another construction detached.

Fig. 6 is a fragmental view on enlarged scale, of one of the clips in use holding an envelop on a platen, fragments of which are shown in section. a

Fig. 7 is a plan of another form of clip.

The clamp is made up of two clips 1, 2, which operate on the same principle, but are constructed as rights and lofts.

Each clip is shown in the drawings as made of a strip of resilient material, preferably spring steel; and comprises a body to each other and the limb 7 being trans verse thereto and forming a lateral extension the tip of which is a runner. Limb 7 is a spring connecting limbs 6 and 8 to comply with the resilient requirements of the envelop clamp. The limb 8 terminates in front and back bendsv 9, 10 formed by turning up the ends of limb 8. The strip forming the clip may be constructed of one or more pieces, the limb 5 being an exten sion of the body 3, and the limb 6 being connected thereto at the end, farthest from the lip, in any suitable manner as by rivets 6 turned up at its ends so as to allow an enis being shifted on the velop 11 to pass freely under the guide from either direction, and the transverse limb 7 is'preferably bent up at its root close to the limb 6 to hold the runner at elevation toaccommodate the envelops 11.

In practice the clips are applied as rights and lefts in suitable position 'on the platen pad 12 equidistant from the center line of envelop delivery, and are secured to the platen pad by the pad clamp a, at a distance apart greater than the length of the envelope to be printed, but close enough to each other to extend over the envelops sufficiently to compensate for shortening of the envelop by crumpling or bending. The ends of the guides are both turned up from the platen-pad engaging face of the guide so as to allow the envelop to pass freely into the clam in aosition without inter-- ference by the edges of the window slot or orifice 13.

The construction and arrangement of the guide, the tongue, and the connection between the tongue and guide is such that although the envelop is securely held upon the platen, it may be shifted e-ndwise or edgewise; but the pressure of the guides and tongues is sufficient to hold the envelop down below the level of the rack, not shown, which passes down and back over the face ofthe platen;

By the construction shown, window envelops, thatis to say, envelops having an orifice 13 cut therein to expose the written address on the latter when the same is inclosed, are caught by the guides 9 and 10 and are firmly held down while the envelop platen pad, edgewise or endwise.

The guides 8 are long enough to extend clear across the windows, and the up-turned ends 9 andlO do not allow the guides to catch on the margins of the window.

By providing the pair of'clips provided with resiliently mounted extensions 7, '8 extending toward each other and adapted to engage and hold an envelop toward the platen the envelops may be printed amide livered from the press without the losses hereinbefore referred to.

I claim.

': 1. A pair of clips for a printing press against the platen substantially as and for the purpose set forth.

2'. An envelop holding attachment for platen presses comprising a body adapted to be fastened to a platen; and resilient limbs connected to said body and forming a lateral extension from the body to hold an envelop between its tip and against the platen.

3. An envelop clamp for use on printing press platens comprising a spring limb having a tip adapted to extend over an envelop to be printed and to hold such envelop be- 7 tween it and against the platen; and means to connect said spring limb to the platen.

4. An envelop clamp for use on printing press platens comprising a spring limb having a tip adapted to extend over an envelop to be printed and to accommodate such envelop between it and the platen and to hold such envelop against the platen.

5. An envelop clamp for use on printing press platens comprising a body, a spring limb connected to and extending laterally from said body and having a runner adapted to extend over an envelop to be printed and to hold such envelop between it and against the platen; and means to connect said lateral limb to the body; said runner extending transversely to the lateral link and turned up at its ends.

6. An envelop clamp for use on printing press platens comprising spring limbs connected together, one of said limbs being transverse to another and having a tip adapted to extend over an envelop to be printed and to hold such envelop between it and against the platen; and means to connect said spring limb to the platen.

7. An envelop holding attachment for platen presses comprising a body adapted to e fastened. to a platen, and a resilient limb supported'by the body and forming a projection at one edge of the body and adapted to receive the end of an envelop between its tip and the platen.

8. The combination with a printing press platen of a pair of right and left clips having lateral resilient guides to receive the ends of envelops and hold them against the platen.

9. A pair of clipsfor a printing press adapted to be fastened to the platen, each clip comprising a body, a resilient limb attached at one end to said body and lying in parallel relation thereto, a lateral extension on said limb, and members extending from the end of said extension in parallel relation to said body, said members being turned up at their ends.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 31st day of December, 1920.

CHARLES H. MARTIN.

Witness JAMES R. TOWNSEND. 

